Demonstrating that it races at the 24 Hours of Le Mans for a purpose, Audi introduced the R8 V-12 TDI concept that adapted the race-winning diesel powerplant from its R10 prototype to create the world's first diesel-powered supercar.

The twin-turbocharged engine is increased from 5.5 to 6.0 liters and makes 500 bhp and 738 lb.-ft. of torque. While we greatly admire the Corvette ZR1 for being the most powerful road car ever built by Chevrolet, the Audi R8 V-12 TDI is our Best in Show for its cutting-edge engine technology.